Side sealing pouring structure of pellet chain grate machine

Abstract

The side sealing pouring structure of the pellet chain grate machine belongs to the technical field of chain grate machines and comprises a chain grate machine body, a side opening is formed in the side wall of the chain grate machine body, and an outer formwork used for sealing the outer side of the side opening is arranged at the position, corresponding to the side opening, of the outer wall of the chain grate machine body. A wooden inner template for sealing the inner side of the side opening is arranged at the position, corresponding to the side opening, of the inner wall of the chain grate machine body; a pouring groove communicating with the side opening is formed in the side, facing the side opening, of the outer formwork, and the shape and size of the pouring groove in the length direction of the pouring groove are at least the same as those of the side opening in the length direction of the pouring groove. Due to the existence of the outer formwork, the outer formwork can protect the side seal after pouring, the influence of the temperature difference between the inside and the outside of the chain grate on the side seal after pouring is reduced, and therefore the purpose of prolonging the service life of the side seal after pouring is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of chain grates, and in particular relates to a side sealing casting structure of a pelletizing chain grate. Background Art

[0002] The chain grate is a crawler-type heat transfer equipment. In the pellet production process, the chain grate is responsible for the drying and preheating process. The size of the chain grate varies according to the process design, and the length of the larger chain grate is nearly 100m. From the overall structure, the chain grate is divided into a frame, an ash box, a bellows, a running chain and a head and tail transmission, a lower return closure, an upper cover, a shovel plate, a water cooling system, a dry oil lubrication system, etc. In addition, there are auxiliary hot air pipes and various medium pipes. From the perspective of process composition, it is divided into a drying section and a preheating section.

[0003] The side seal of the chain grate is a very important component. The side seal can effectively prevent the material from leaking out from both sides of the chain grate during the sintering process, ensuring the smooth progress of the sintering process and the full utilization of the material; a good side seal can reduce the loss of heat and maintain the stability of the internal temperature of the chain grate, thereby improving thermal efficiency and saving energy; the side seal can protect the side plate of the chain grate, reduce the wear of the side plate by the material or high-temperature gas, and extend the service life of the equipment.

[0004] like Figure 1 As shown, in the prior art, the original side sealing structure of the preheating section of the chain grate has a short service life. It cannot be effectively repaired during the production process after being damaged, and the machine needs to be shut down to enter the internal support formwork of the chain grate to re-cast. During this production cycle, cold air enters the chain grate, which affects the preheating effect and increases the oxygen content at the online outlet, causing a great impact on the production process; the side seal after casting will be damaged again after more than a month of use, so it is necessary to frequently shut down to cast the side seal, which seriously affects the production efficiency. Summary of the invention

[0005] In order to solve the problem that the side seal in the prior art has a short service life after casting and needs frequent shutdown for casting, the present invention provides a side seal casting structure for a pellet chain grate machine, which achieves the purpose of prolonging the service life of the side seal after casting the side seal.

[0006] The technical solution adopted by the side sealing casting structure of a pelletizing chain grate machine of the present invention is:

[0007] A side sealing casting structure of a pelletizing chain grate comprises a chain grate body, a side opening is arranged on the side wall of the chain grate body, an outer template for sealing the outer side of the side opening is arranged at a position of the outer wall of the chain grate body corresponding to the side opening, and a wooden inner template for sealing the inner side of the side opening is arranged at a position of the inner wall of the chain grate body corresponding to the side opening; wherein a casting trough connected to the side opening is provided on one side of the outer template facing the side opening, and the shape and size of the casting trough along its length direction are at least the same as the shape and size of the side opening along its length direction.

[0008] A further improvement of the technical solution of the present invention is that a pouring port connected to a pouring trough is provided at the top center of the outer template, and a pouring pipe connected to the pouring port is fixedly provided at the top of the outer template at a position corresponding to the pouring port.

[0009] A further improvement of the above technical solution of the present invention is that: a plurality of vibration holes are opened on both sides of the casting pipe at the top of the outer template, and a blocking block for blocking the corresponding vibration hole is arranged at the position of each vibration hole at the top of the outer template.

[0010] A further improvement of the technical solution of the present invention is that the outer template is arranged on the outer wall of the chain grate body through multiple groups of connecting mechanisms.

[0011] A further improvement of the above technical solution of the present invention is that each group of the connecting mechanisms includes connecting blocks located at the upper and lower sides of the side opening and fixedly connected to the outer wall of the chain grate body, and the two connecting blocks are connected by a vertical connecting rod.

[0012] A further improvement of the above technical solution of the present invention is that: the connecting rod is a C-shaped steel, and the web of the C-shaped rod is in contact with a side of the outer template away from the chain grate body.

[0013] A further improvement of the technical solution of the present invention is that the wooden inner template is connected to the inner wall of the chain grate body by bolts.

[0014] Due to the adoption of the above technical solution, the technical advances achieved by the present invention include:

[0015] In the present invention, the side opening of the chain grate body can be sealed by the mutual cooperation of the outer template and the wooden inner template; through the provided casting pipe, the high-temperature resistant and heat-insulating casting material can be cast into the sealed side opening and the casting trough, and the casting of the side seal is completed after the casting material solidifies; after the casting is completed, the outer template and the wooden inner template do not need to be removed, and when the chain grate is used, the wooden inner template will be burned by the high temperature inside the chain grate, thereby achieving the purpose of removing the wooden inner template; at the same time, due to the existence of the outer template, the outer template will protect the side seal after casting, reduce the influence of the temperature difference between the inside and outside of the chain grate on the side seal after casting, thereby achieving the purpose of extending the service life of the side seal after casting.

[0016] In the present invention, after pouring the high temperature resistant castable into the sealed side opening and the casting trough, the blocking block can be removed from the vibration hole, and then a vibration rod can be inserted into the unsolidified castable through the vibration hole. The castable is compacted by the action of the vibration rod to prevent bubbles from appearing in the castable, which would affect the use effect of the side seal.

[0017] At the same time, if the cast side seal of the present invention is damaged after long-term use and needs to be recast, the outer template can be removed by removing the connecting mechanism, thereby facilitating the installation of a new wooden inner template. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a pellet chain grate in the prior art;

[0019] Figure 2 It is a structural schematic diagram of a side sealing casting structure of a pellet chain grate machine of the present invention;

[0020] Figure 3 The invention discloses a side sealing casting structure of a pellet chain grate. Figure 2 The structural diagram of the middle A part;

[0021] Figure 4 It is a schematic diagram of the exploded structure of the outer template, the inner template and the chain grate body in the side sealing casting structure of the pellet chain grate of the present invention;

[0022] Figure 5 The invention discloses a schematic diagram of an explosion structure of an outer template of a side sealing casting structure of a pelletizing chain grate.

[0023] In the accompanying drawings: 1, chain grate body; 11, side opening;

[0024] 2. External formwork; 21. Casting trough; 22. Casting port; 23. Casting pipe; 24. Vibration hole; 25. Blocking block;

[0025] 3. Wooden inner formwork;

[0026] 4. Connecting mechanism; 41. Connecting block; 42. Connecting rod; 43. Connecting hole; 44. Through hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. In the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0028] First reference Figure 2 , Figure 3 and Figure 4It can be seen that the present invention includes a chain grate body 1, and the side wall of the preheating section of the chain grate body 1 is provided with a side opening 11 for setting a side seal, and the outer wall of the chain grate body 1 is provided with an outer template 2 for closing the outside of the side opening 11 at the position corresponding to the side opening 11, and the outer template 2 is made of a 3mm thick iron plate. At the same time, a wooden inner template 3 for closing the inside of the side opening 11 is provided on the inner wall of the chain grate body 1, so that the side opening 11 of the chain grate body 1 can be sealed by the mutual cooperation of the outer template 2 and the wooden inner template 3, so that it is convenient to add casting material to the side opening 11 to form a side seal.

[0029] In order to facilitate the addition of casting material to the closed side opening 11, the present invention refers to Figure 4 and Figure 5 It can be seen that a casting groove 21 is provided on one side of the outer template 2 facing the chain grate machine body 1, and the shape of the casting groove 21 along the length direction is the same as the shape of the side opening 11 along the length direction, and the shape area of ​​the casting groove 21 along the length direction is the same as the shape area of ​​the side opening 11 along the length direction, or the shape area of ​​the casting groove 21 along the length direction is greater than the shape area of ​​the side opening 11 along the length direction, so as to ensure that the casting material completely fills the side opening 11 during casting; continue to refer to Figure 5 It can be seen that a pouring port 22 connected to the pouring trough 21 is opened at the center position of the top of the outer formwork 2, and a pouring pipe 23 connected to the pouring port 22 is fixedly welded at the position of the top of the outer formwork 2 corresponding to the pouring port 22, and at the same time, a plurality of vibration holes 24 are opened on both sides of the pouring pipe 23 at the top of the outer formwork 2, and each vibration hole 24 is closed by a T-shaped blocking block 25.

[0030] In order to facilitate the installation of the outer template 2 in the present invention, the outer template 2 can be connected to the side wall of the chain grate body 1 through multiple sets of connecting mechanisms 4. Figure 2 , Figure 3 and Figure 4It can be seen that each group of connecting mechanisms 4 includes connecting blocks 41 located on the upper and lower sides of the side opening 11 and fixedly welded to the outer wall of the chain grate body 1 respectively. A connecting hole 43 with an internal thread is provided on each connecting block 41. At the same time, the two connecting blocks 41 are connected by a vertical connecting rod 42. The connecting rod 42 can specifically adopt the C-shaped steel commonly used in the prior art. In order to connect the C-shaped steel and the connecting block 41 together, through holes 44 are respectively provided at the positions of the connecting holes 43 at both ends of the web of the C-shaped steel. After the outer template 2 closes the outer wall of the side opening 11, the C-shaped steel can be placed between the corresponding two connecting blocks 41, and the connecting hole 43 is connected to the through hole 44 accordingly, and then bolts are screwed into the connected connecting hole 43 and through hole 44, and the C-shaped steel and the connecting block 41 are connected together by bolts, and the bolts are tightened until the web of the C-shaped steel is tightly fitted with the side of the outer template 2 away from the chain grate body 1, thereby fixing the outer template 2 on the chain grate body 1 through the connecting mechanism 4.

[0031] In order to prevent a gap between the side of the outer template 2 facing the chain grate body 1 and the outer wall of the chain grate body 1, thereby affecting the molding quality of the side seal, sealing putty can be applied to the gap between the side of the outer template 2 facing the chain grate body 1 and the outer wall of the chain grate body 1 after the outer template 2 is installed in place.

[0032] At the same time, in order to facilitate the installation of the wooden inner formwork 3 in the present invention, the shape and size of the wooden inner formwork 3 along its length direction can be made exactly the same as the shape and size of the side opening 11 along its length direction, so that the wooden inner formwork 3 can be just inserted into the side opening 11; in order to facilitate the fixing of the wooden inner formwork 3, wooden connecting plates (not shown in the figure) perpendicular to the wooden inner formwork 3 can be fixedly connected by nails at the upper and lower ends of the side of the wooden inner formwork 3 facing the side opening 11. When the wooden inner formwork 3 is inserted into the side opening 11, the wooden connecting plate is respectively fitted with the upper and lower inner walls of the side opening 11, and then bolts are screwed into the wooden connecting plate and the corresponding inner wall of the side opening 11, thereby achieving the purpose of fixing the wooden inner formwork 3, preventing the wooden inner formwork 3 from tipping over when the castable is added, resulting in casting failure.

[0033] The working principle of the side sealing casting structure of the pelletizing chain grate in this embodiment is as follows: Figure 2 As shown, first install the outer formwork 2 and the wooden inner formwork 3 in place, and then add castable (such as corundum composite castable or low cement castable) into the side port 11 and the casting trough 21 through the casting pipe 23 until the side port 11 and the casting trough 21 are filled, then remove the blocking block 25 on the vibration hole 24, open the vibration hole 24, and extend a vibrating rod into the castable through the opened vibration hole 24, and vibrate the bubbles in the castable out by the vibrating rod, so as to compact the castable.

[0034] The compacted castable is left to stand for a period of time and then solidifies to form a side seal.

[0035] When the chain grate is in use, the wooden inner template 3 will be burned off by the high temperature inside the chain grate, thereby achieving the purpose of removing the wooden inner template 3.

[0036] In the above embodiment, the present invention provides a side sealing casting structure of a pelletizing chain grate machine, and the side opening of the chain grate machine body can be sealed through the mutual cooperation of the outer template and the wooden inner template; through the provided casting pipe, the high temperature resistant and heat-insulating casting material can be poured into the sealed side opening and the casting trough, and the casting of the side seal is completed after the casting material solidifies; after the casting is completed, the outer template and the wooden inner template do not need to be removed. When the chain grate machine is used, the wooden inner template will be burned by the high temperature inside the chain grate machine, thereby achieving the purpose of removing the wooden inner template; at the same time, due to the existence of the outer template, the outer template will protect the side seal after casting, reduce the influence of the temperature difference between the inside and outside of the chain grate machine on the side seal after casting, thereby achieving the purpose of extending the service life of the side seal after casting.

[0037] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A side sealing casting structure of a pelletizing chain grate, comprising a chain grate body (1), the side wall of the chain grate body (1) being provided with a side opening (11), characterized in that: An outer template (2) for closing the outer side of the side opening (11) is provided at a position of the outer wall of the chain grate body (1) corresponding to the side opening (11), and a wooden inner template (3) for closing the inner side of the side opening (11) is provided at a position of the inner wall of the chain grate body (1) corresponding to the side opening (11); wherein a casting trough (21) connected to the side opening (11) is provided on the outer template (2) on a side facing the side opening (11), and the shape and size of the casting trough (21) along its length direction are at least the same as the shape and size of the side opening (11) along its length direction.

2. The side sealing casting structure of a pelletizing chain grate according to claim 1, characterized in that: A pouring port connected to a pouring trough (21) is provided at the top center of the outer template (2), and a pouring pipe (23) connected to the pouring port is fixedly provided at the top of the outer template (2) at a position corresponding to the pouring port.

3. The side sealing casting structure of a pelletizing chain grate according to claim 2, characterized in that: The top of the outer template (2) is provided with a plurality of vibration holes (24) on both sides of the pouring pipe (23), and a blocking block (25) for blocking the corresponding vibration hole (24) is provided at a position corresponding to each vibration hole (24) on the top of the outer template (2).

4. The side sealing casting structure of a pelletizing chain grate according to claim 1, characterized in that: The outer template (2) is arranged on the outer wall of the chain grate body (1) via multiple groups of connection mechanisms (4).

5. The side sealing casting structure of a pelletizing chain grate according to claim 4, characterized in that: Each group of the connecting mechanisms (4) comprises connecting blocks (41) located at the upper and lower sides of the side opening (11) and fixedly connected to the outer wall of the chain grate body (1), and the two connecting blocks (41) are connected via a vertical connecting rod (42).

6. The side sealing casting structure of a pelletizing chain grate according to claim 5, characterized in that: The connecting rod (42) is a C-shaped steel, and the web of the C-shaped rod is in contact with a side of the outer template (2) away from the chain grate body (1).

7. A side sealing casting structure for a pelletizing chain grate according to any one of claims 1 to 6, characterized in that: The wooden inner template (3) is connected to the inner wall of the chain grate body (1) via bolts.

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